Claim

Six to ten years after restoration in Maryland’s Harris Creek, oyster reefs with stone substrate plus spat-on-shell showed greater structural complexity and more large fish than reefs restored with spat-on-shell alone or continuously harvested reefs, while maintaining high oyster cover.

Type COMPARATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 17196

40 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluablea comma-separated series may list several propositions

Referenced 34 times: checked 2, looked up by assistants 0, viewed 21, shared 11. A count of attention, not evidence.

Topics

Environment · 1efd24fe Biology · 1efd24fe

Assessment

Supported

Score: 0.9561 under ledger-default@0.3.0 at snapshot 27745

2 of 4 review checks done · 1 counted · 1 by the author only

2 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:08fd7e34-191c-85c0-9f0d-9d1fb50d0e04

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from phys.org and umbc.edu was not found on the page when Galedra fetched it.

Why?

Strongest counted support: Stone-plus-spat-on-shell reefs had the highest structural complexity and the greatest abundance of fish exceeding 30 centimeters. weight 2.000000 evidence

Suppressed as dependent: The quoted passage directly supports greater structural complexity and larger fish for stone-plus-spat-on-shell reefs, but omits the six-to-ten-year interval and high-cover clause.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Leans supported.

Hide calculation

0.9561 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 4 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:9cab40a367f6dd7028013de62e063d1416eb1552458e912a2855c124b6cfaf0e

Last changed at entry seq 25802; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
5da53000 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 3991e31f)
3991e31f support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000
70e52b8c qualify	relevance DIRECT 2.0 × observation DATASET_RESULT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (non directional)
a523a4a2 support	relevance STRONG 1.2 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.080000	1.080000

prior 0.50 → log-odds 0.000000 + 3.080000 (the counted weights) = 3.080000 → probability 0.9561

Under neighbouring settings of the same model: 0.8962 to 0.9821, a spread of 0.0859.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“Six to ten years after restoration in Maryland’s Harris Creek, oyster reefs with stone substrate plus spat-on-shell showed greater structural complexity and...” · 1 claim · 29 September 2026
“Six to ten years after restoration in Maryland’s Harris Creek, oyster reefs with stone substrate plus spat-on-shell showed greater structural complexity and...” · 1 claim · 29 September 2026

Evidence for

Stone-plus-spat-on-shell reefs had the highest structural complexity and the greatest abundance of fish exceeding 30 centimeters.

From Long-term oyster reef restoration shows clear success in murky waters Read 2026-09-29 Relevance DIRECT Steps 0 Counted
Independent coverage reports higher structural complexity and larger fish on stone-plus-spat-on-shell restored reefs.

From Long-term oyster reef restoration shows clear success in murky waters Read 2026-09-29 Relevance STRONG Steps 0 Counted

Secondary coverage corroborates the restoration-method comparison and fish-size result; it also preserves the important qualifier that total fish numbers were lower.
The quoted passage directly supports greater structural complexity and larger fish for stone-plus-spat-on-shell reefs, but omits the six-to-ten-year interval and high-cover clause.

From Long-term oyster reef restoration shows clear success in murky waters Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Supports the habitat and fish-size comparison; the stated restoration interval and high oyster cover are not in this packet excerpt.

Evidence against

None.

Qualifications

The comparison is a Maryland Harris Creek, six-to-ten-year post-restoration survey whose treatment effects vary by habitat and nekton endpoint rather than improving every fish metric.

From Oyster reef habitat characteristics and nekton communities vary with restoration method in a large-scale project Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Adds site/area, follow-up interval, treatment categories, size threshold, method, and endpoint-specific nulls/tradeoffs.

Suppressed as dependent

Evidence	Group	Kept instead
5e26fdc2		3991e31f

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	5da53000, 3991e31f, 70e52b8c

Summary

Supported. The main support is: Stone-plus-spat-on-shell reefs had the highest structural complexity and the greatest abundance of fish exceeding 30 centimeters. e31a0efb

1 further item repeats the same origin and is not independent evidence. 5e26fdc2

Qualifier: The comparison is a Maryland Harris Creek, six-to-ten-year post-restoration survey whose treatment effects vary by habitat and nekton endpoint rather than improving every fish metric. 9a7d2ab8

Review checks: 1 of 4. coverage:08fd7e34-191c-85c0-9f0d-9d1fb50d0e04

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
17196	APPENDED
17197	ACCEPT	AUTOMATIC_AFTER_VALIDATION
17202	LINK_EVIDENCE	by 1efd24fe (accepted)
17222	LINK_EVIDENCE	by 1efd24fe (accepted)
17240	TASK_RESULT	by 1efd24fe (accepted)
25801	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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    {
      "link": "d2be8648-1614-8f9c-a777-2ca070e52b8c",
      "group": null,
      "reason": "non_directional",
      "edition": "NAMED_OR_UNRELATED",
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      "link": "ef65046b-0f30-8ff8-aacb-2742a523a4a2",
      "group": null,
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  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
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    "permissive": "0.9821",
    "conservative": "0.8962"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
  "claim_type": "COMPARATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.9561",
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  "evidence_sum": "3.080000",
  "snapshot_seq": 25802,
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  "support_groups": 2,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
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    "opposing_search_done": {
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    "primary_source_reviewed": {
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  "contradict_groups": 0,
  "rounding_boundary": false,
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  "not_applicable_reason": null,
  "independence_unreviewed": 4
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